Operating Instructions Safety Systems
MGB-L..B-PN.-… (PROFINET) and With Expanded Data Structure Type C
20
(translation of the original operating instructions) 2123622-04-06/19
12. Electrical connection
WARNING
In case of an error, loss of the safety function through incorrect connection.
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Mounting must be performed only by authorized personnel.
CAUTION
Risk of damage to equipment or malfunctions as a result of incorrect connection.
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All the electrical connections must either be isolated from the mains supply by a safety trans-
former according EN IEC 61558-2-6 with limited output voltage in the event of a fault, or by other
equivalent isolation measures.
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Power devices which are a powerful source of interference must be installed in a separate location
away from the input and output circuits for signal processing. The cable routing for safety circuits
should be as far away as possible from the cables of the power circuits.
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In order to avoid EMC interference, follow EMC notes on devices in the immediate vicinity of the
MGB system and their cables.
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In order to avoid EMC interference, the physical environmental and operating conditions at the
installation site of the device must comply with the requirements according to the standard DIN
EN 60204-1:2006, section 4.4.2 /EMC).
Important!
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The supply for further users on the bus may be forwarded via the Euchner MGB system. The entire
supply current through the MGB must not be higher than specified in the chapter
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The function earth must be connected. An M6 threaded bore is available on the mounting plate
for this purpose.
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If the device does not appear to function when operating voltage is applied (e.g. UB LED does not
illuminate), the safety switch must be returned unopened to the manufacturer.
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To ensure the stated degree of protection IP67 is achieved, the cover screws must be tightened to
a tightening torque of 1 Nm.
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Tighten screw for the cover of the mechanical release to 0.5 Nm.
